include/asm-arm/proc-armo/tlbflush.h

   1 /*
   2  * TLB flushing:
   3  *
   4  *  - flush_tlb_all() flushes all processes TLBs
   5  *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
   6  *  - flush_tlb_page(vma, vmaddr) flushes one page
   7  *  - flush_tlb_range(vma, start, end) flushes a range of pages
   8  */
   9 #define flush_tlb_all()                         memc_update_all()
  10 #define flush_tlb_mm(mm)                        memc_update_mm(mm)
  11 #define flush_tlb_range(vma,start,end)          \
  12                 do { memc_update_mm(vma->vm_mm); (void)(start); (void)(end); } while (0)
  13 #define flush_tlb_page(vma, vmaddr)             do { } while (0)
  14
  15 /*
  16  * The following handle the weird MEMC chip
  17  */
  18 static inline void memc_update_all(void)
  19 {
  20         struct task_struct *p;
  21
  22         cpu_memc_update_all(init_mm.pgd);
  23         for_each_task(p) {
  24                 if (!p->mm)
  25                         continue;
  26                 cpu_memc_update_all(p->mm->pgd);
  27         }
  28         processor._set_pgd(current->active_mm->pgd);
  29 }
  30
  31 static inline void memc_update_mm(struct mm_struct *mm)
  32 {
  33         cpu_memc_update_all(mm->pgd);
  34
  35         if (mm == current->active_mm)
  36                 processor._set_pgd(mm->pgd);
  37 }
  38
  39 static inline void
  40 memc_clear(struct mm_struct *mm, struct page *page)
  41 {
  42         cpu_memc_update_entry(mm->pgd, (unsigned long) page_address(page), 0);
  43
  44         if (mm == current->active_mm)
  45                 processor._set_pgd(mm->pgd);
  46 }
  47
  48 static inline void
  49 memc_update_addr(struct mm_struct *mm, pte_t pte, unsigned long vaddr)
  50 {
  51         cpu_memc_update_entry(mm->pgd, pte_val(pte), vaddr);
  52
  53         if (mm == current->active_mm)
  54                 processor._set_pgd(mm->pgd);
  55 }
  56
  57 static inline void
  58 update_mmu_cache(struct vm_area_struct *vma, unsigned long addr, pte_t pte)
  59 {
  60         struct mm_struct *mm = vma->vm_mm;
  61         memc_update_addr(mm, pte, addr);
  62 }
  63